function mock(app, url, data) {
    app.get(url, (request, response) => {
      response.json(data)
    })
  }
  
  const homeData = require('./src/mock/bookHome')
  const shelfData = require('./src/mock/bookShelf')
  const listData = require('./src/mock/bookList')
  const flatListData = require('./src/mock/bookFlatList')
  module.exports = {
    // baseUrl: process.env.NODE_ENV === 'production'
    //   ? './'
    //   : '/',
    devServer: {
      
      before(app) {
        mock(app, '/book/home', homeData)
        mock(app, '/book/shelf', shelfData)
        mock(app, '/book/list', listData)
        mock(app, '/book/flat-list', flatListData)
      }
    
    },
    // configureWebpack: {
    //   performance: {
    //     hints: 'warning',
    //     maxAssetSize: 524288 * 10,
    //     maxEntrypointSize: 524288 * 10
    //   }
    // }
  }